To understand the function of the expansion joint (also known as the electric ball valve), the first thing to know is the structure of the limit electric ball valve. The limit electric ball valve is composed of the body, expansion pipe, pressure plate, sealing ring, pressure plate bolt, nut, limit bolt and nut. From the structure, it can be seen that the limit electric ball valve is added with limit bolt and nut on the basis of the ordinary electric ball valve, What special effects and functions will there be if you increase the thickness?
The main function of the ordinary electric ball valve is to bear the pressure and thrust inside the pipeline, to compensate for the size change of the pipeline caused by thermal expansion and cold contraction, that is, to compensate for the axial displacement of the pipeline, and to facilitate the installation, maintenance, and disassembly of the connected pumps or valves. However, if the pipeline's instantaneous pressure is too large, Or when the displacement exceeds the expansion capacity of the electric ball valve itself, the expansion pipe of the electric ball valve will pull off, causing damage to the connected pump or valve, or even damage to the entire pipeline. After the limit bolt is added to the electric ball valve, the defect of the ordinary electric ball valve is solved. The electric ball valve can freely expand and contract according to the needs of the pipeline in the expansion amount it bears, but once it exceeds its expansion amount, it will play a limiting role to ensure the normal operation of the electric ball valve.